<p>So there are actually two different things you can do - you can add <code>{r}</code> to the URL template which will expand as <code>@2x</code> on hidpi displays, so that is what we need to do for <a href="https://github.com/gravitystorm" class="user-mention">@gravitystorm</a>'s layers.</p>
<p>You can also set <code>detectRetina: true</code> on a layer, which will cause it to fetch four tiles from the next higher zoom. That doesn't work very well though as you wind up with very thin roads and small text.</p>

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